FLORA OF VIETNAM Gesneriaceae Oreocharis argyrophylla W.H.Chen, H.Q.Nguyen & Y.M.Shui
Son La Prov., Van Ho Distr., Tan Xuan comm., A Lay village, around point 20°40′46.2N 104°39′49.6E.
Primary evergreen broad-leaved forest on very steep rocky slopes and on mountain tops composed with red-brown sandstone at elevation about 1500 m a.s.l.
Terrestrial and lithophytic herb on very steep shady slope. Flowers bright yellow. Occasional.